updating top level readme and changing uart examples to use the 0x8000 base address

README

@@ -105,7 +105,8 @@ my examples).  go to the firmware directory and then the boot directory.
 For each of these files, bootcode.bin, loader.bin, start.elf (NOT
 kernel.img, dont need it, too big).  Click on the file name, it will
 go to another page then click on View Raw and it will let you download
-the file.
+the file.  For reference, I do not use nor have a config.txt file on my
+sd card.  I only have the four files.
 
 bootcode.bin is about 2MBytes, the other files are smaller, so you will
 want an sd card that is at least a few meg, probably a full 128MBytes or

uart01/memmap

@@ -1,7 +1,7 @@
 
 MEMORY
 {
-    ram : ORIGIN = 0x00000000, LENGTH = 0x1000
+    ram : ORIGIN = 0x8000, LENGTH = 0x1000
 }
 
 SECTIONS

uart01/vectors.s

@@ -1,10 +1,7 @@
 
 .globl _start
 _start:
-    b reset
-
-reset:
-    mov sp,#0x1000
+    mov sp,#0x8000
     bl notmain
 hang: b hang
 

uart02/memmap

@@ -1,7 +1,7 @@
 
 MEMORY
 {
-    ram : ORIGIN = 0x00000000, LENGTH = 0x1000
+    ram : ORIGIN = 0x8000, LENGTH = 0x1000
 }
 
 SECTIONS

uart02/vectors.s

@@ -1,10 +1,7 @@
 
 .globl _start
 _start:
-    b reset
-
-reset:
-    mov sp,#0x1000
+    mov sp,#0x8000
     bl notmain
 hang: b hang
 

uart03/memmap

@@ -1,7 +1,7 @@
 
 MEMORY
 {
-    ram : ORIGIN = 0x00000000, LENGTH = 0x1000
+    ram : ORIGIN = 0x8000, LENGTH = 0x1000
 }
 
 SECTIONS

uart03/novectors.s

@@ -1,13 +1,11 @@
 
 .globl _start
 _start:
-    b reset
-reset:
     ldr sp,stack_start
     ldr r0,thumb_start_add
     bx r0
 
-stack_start: .word 0x1000
+stack_start: .word 0x8000
 thumb_start_add: .word thumb_start
 .word 0
 .word 0